In ponds, turtles undoubtedly compete with fish for natural food sources such as crayfish and insects. Turtles, however, are valuable because they kill diseased and weakened fish, and clean up dead or decaying animal matter.
One other side note! I have these buggers lining up for my expensive fish food and I don't much care for that either, they don't get much I suppose but still. I don't mind having some but I do not want my pond overran with them either.... they can and will make holes in the back side of your dam also! Specially snappers!!
RC
